Check the website: http://www.helloruby.com/about http://www.helloruby.com/about I can't find any explicit mention of the Ruby programming language being used

Check the website: http://www.helloruby.com/about http://www.helloruby.com/about I can't find any explicit mention of the Ruby programming language being used as an example, but it's pretty clear that the name of the protagonist is not an accident. The book itself doesn't seem to dive too deeply into actual code, though.